opa-arptbl-tuneup

Adjusts kernel ARP/neighbor table sizes for very large subnets based on configured IPv4/IPv6 network interface netmask values. Normally executes once on boot by opa.service; however, opa-arptbl-tuneup can be invoked with user discretion for a changed subnet configuration.

Note: Must execute as root.

Syntax

opa-arptbl-tuneup [--help | start | stop | restart | force-reload | status]

Options

start
Adjusts kernel ARP table size.
stop
Restores previous configuration.
restart
Stops then starts.
force-reload
Stops then starts. (Identical to restart option.)
status
Checks if original table size was changed.